Hi there! I understand that some of your Sleeper league chat windows are not loading while others work fine. I'd like to help you get this sorted out.

To start, can you tell me if this happens consistently for the same leagues or if it's random? Also, are you using Sleeper via the web on your Windows 10 device or through the app? Knowing this will help narrow down the cause.

Meanwhile, a good initial step is clearing your browser cache since stuck cache files can cause partial loading issues with web apps like Sleeper, especially when some chat windows load and others don’t. Here’s how you can do it on your WebKit browser:

1. Open your browser settings.
2. Find the section for privacy or browsing data.
3. Select “Clear browsing data” and ensure you choose to clear cached images and files.
4. Restart your browser and reload Sleeper.

If you're using the Sleeper Windows app instead, try closing and restarting the app, or logging out and back in.

Let me know if you’ve already tried that or if the issue persists after trying this. We can then explore more detailed steps to fix your chat window loading problem.